The ACT is a concrete thickness gauge that tests concrete pavements, slabs, retaining walls, foundation footings and tunnels. This nondestructive testing instrument also identifies defects such as delaminations and spalls.

The ACT is extremely precise and works in structures from 75 to 900 mm.

The portable ACT is light, battery operated and rugged for field use in all weather conditions.

The technology: ACT uses ultrasonic analysis. Its ultrasonic echo technology takes the uncertainty out of concrete thickness tests. The ACT electronically generates a broadband pulse that includes all frequencies required to accurately determine the thickness of the structure. For a given structural element and material there is a one-to-one relationship between resonant (natural) frequency and thickness. The ACT eliminates the need to manually impact the structure, the need for coring, and the need to assume a wave speed.

The test: Measuring thickness with the ACT consists of placing two small probes on the structure to be tested and touching the ACT screen. A telescoping pole helps test far to reach structures. As the structure responds to its natural frequency, its thickness is displayed on the high visibility ACT screen. The ACT also determines the wave speed of structures of unknown thickness.

Clear, easy to interpret output graphs are customized with the user’s company logo.